Solid colors: 80% Cotton, 20% Polyester; Heather Grey: 78% Cotton, 22% Poly; Dark Heather: 50% Cotton, 50% Polyester Imported Pull On closure Machine Wash This accessories is for Butterfly Lovers. Its great to use while watching colorful Butterflies in the nature. Makes a great surprise for Butterfly Lovers or Entomologysts. 8.5 oz, Classic fit, Twill-taped neck